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Orange County West Campus Office Building -HVAC <br />PDC Project 23020 Testing,Adjusting,and Balancing for <br />HVAC 23 05 93 - 4 <br />E.TAB Supervisor and Technician Qualifications: Certified by same organization as TAB agency. <br />F.For each air handling system,provide a graphical static pressure profile indicating the pressure <br />drop across each component of the air handling unit (filter,coils,dampers,wheel,etc). <br />3.02 EXAMINATION <br />A.Verify that systems are complete and operable before commencing work. Ensure the following <br />conditions: <br />1.Systems are started and operating in a safe and normal condition. <br />2.Temperature control systems are installed complete and operable. <br />3.Proper thermal overload protection is in place for electrical equipment. <br />4.Final filters are clean and in place. If required,install temporary media in addition to final <br />filters. <br />5.Duct systems are clean of debris. <br />6.Fans are rotating correctly. <br />7.Fire and volume dampers are in place and open. <br />8.Air coil fins are cleaned and combed. <br />9.Access doors are closed and duct end caps are in place. <br />10.Air outlets are installed and connected. <br />11.Duct system leakage is minimized. <br />B.Submit field reports. Report defects and deficiencies that will or could prevent proper system <br />balance. <br />C.Beginning of work means acceptance of existing conditions. <br />3.03 PREPARATION <br />A.Hold a pre-balancing meeting at least one week prior to starting TAB work. <br />1.Require attendance by all installers whose work will be tested,adjusted,or balanced. <br />B.Obtain design drawings and specifications and become thoroughly acquainted with the design <br />intent. <br />C.Obtain copies of approved shop drawings of all air handling equipment,outlets (supply,return,and <br />exhaust)and temperature control diagrams. <br />D.Compare design to installed equipment and field installations. <br />E.Walk the system to determine variations of installation from design. <br />F.Check filters for cleanliness. <br />G.Lubricate all motors and bearings. <br />3.04 ADJUSTMENT TOLERANCES <br />A.Air Systems Tolerances <br />Systems -Air Tolerances of Drawing <br />Design Remarks <br />Air Handling Units,Fans <br />(Supply,Return,Exhaust)-5%to +10%Systems with Filters must be tested <br />at dirty conditions <br />Outdoor Air 100%to 110%To obtain this accuracy requires <br />ductwork be traversed <br />Terminal Units +/-5% <br />Calibrate all boxes at minimum of <br />two points.Single point calibration <br />is not acceptable. <br />Diffusers and Grilles +/-10%If design is less than 100 CFM, <br />tolerance can be +/-10 CFM <br />Pressurized Rooms -Positive Supply +100-105% <br />Exhaust or Return <br />Room offset tolerance to design <br />100%to +110% <br />Docusign Envelope ID: 8DED1454-68D2-4E36-9FC6-E56FF2124E5D